Maple Issue

Without seeing it in person it is difficult to diagnose problems. Some suggestions are that when you transplanted the tree, you may have buried it too deep causing the tree to be starved for oxygen. The root flare should be exposed. That is the part of the trunk where the tree starts to widen at the base. You could have too much mulch on it like those mulch volcanoes we see too often. It could have verticillium wilt which is a soil borne disease and can cause loss of vigor. Any number of insects could be enjoying the tree but we would need to see one for ID. We suggest since these are problems that need to be seen in person, call Lehigh County Extension’s office or a local certified arborist service. Usually a diagnosis is free from a tree service, treatment is not.